US692535A - Spring-seat. - Google Patents

Description

"0.592535. Patented Feb. 4, I902.

w. A. MURRAY.

SPRING SEAT.

(Application filed Oct. 2S,\1901.2

'(No Model.)

THE NORRIS ?EYERS 60., PNOYO-LITHO WASNNGTDN u. c.

UNITED STATES PATENT @FFI'CE.

WILLIAM A. MURRAY, OF CINCINNATI, OHIO.

SPRING-SEAT.

SPECIFICATION forming part of Letters Patent No. 692,535, dated February 4, 1902.

' Application filed October 23, 1901. Serial No. 80,168. (No model.)

To ctZZ whom it may concern:

Be it known that I, WILLIAM A. MURRAY, a citizen of the United States of America, and a resident of Cincinnati,in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Spring- Seats,of which the followingis aspecification.

My invention relates to spring seats in which coiled springs are seated in metallic cross-strips, which are supported by a frame. Its object is to provide cross-strips which offer the maximum resistance to a bending strain with the smallest amount of metal, which afford seats into which the springs are readily placed and locked, and which are simple and inexpensive in their construction.

Referring to the accompanying drawings, which form part of this specification, Figure 1 is a view showing the sides of a seat-frame in section and 7 one of the cross-strips and the springs thereon in side elevation. Fig. 2 is a detail plan view, upon an enlarged scale, of a flat strip of metal before it is bent up to form a completedcross-strip. Fig. 3 is a detail perspective view of one end of one of my crossstrips. Fig. 4 is a plan view of the same.

Referring to the parts, cross-strips A are made from fiat strips of metal. The first step in the process of forming a cross-strip is to stamp groups each of four holes a, a, a and 0. respectively, in the strip, the distances between the groups determining the distance apart of springs B. Holes a and a are made at a short distance fromthe longitudinal axis of the strip and at a distance apart equal to the diameter of the lower coil of spring 13. Holes a and a? are made opposite holes a and a and at the same distance as those from the axis of the strip. Then the edges of the stripare bent inward about its longitudinal axis,

preferably in a shape which in cross-section is semicircular, but leaving a flat portion at the ends of the strip, which are then curved upward into hangers a a which have perforated flanges d a to rest upon top of and be secured to the sides 0 c of the seat-frame. When the edges of the strip are bent inward, holes a, a, a and d are in the same horizontal plane. In fitting a spring B in place its lower end I) is inserted in either hole a or a and the spring is rotated in a manner similar to that used in driving a screw, thereby carrying the end of the spring forward successively through the'three remaining holes, the spring being locked thereby securely in place because of the rise in the spiral.

It is seen that a cross-strip thus formed offers a great resistance to any bending strain without increasing the amount of metal in it, that it affords a seat into which a spring is easily and securely locked, and that the proc ess of its manufacture is inexpensive.

What I claim is-- 1. In a spring-seat the combination of a seat-fram e, metal cross-strips having inturned edges with perforations and flat upturned hangers at the ends to be secured to the frame, and coiled springs whose ends engage the perforations in the cross-strips, substantially as shown and described.

2. In a spring-seat the combination of a seat-frame, metal cross strips with down turned edges having groups of perforations v to seat the lower coils of springs and fiat 11ptnrned ends to engage the frame, and the coiled springs seated in the perforations in the cross-strips, substantially as shown and described.

3. As a new article of manufacture a crossstrip, having both its edges inturned to within a short distance of its ends with perforations in the inturned edges and the ends upturned,

to form hangers, substantially as shown and described.

4. As a new article of manufactur'ea crossstrip formed from a flat strip of metal having both its edges perforated and turned inward in a semicircular form except for a short distance at the ends, which are upturned to form hangers, substantially as shown and described. V

5. The combination of a frame, cross-strips secured 'at their ends to the frame and having inturned edges having perforations therein, and coiled springs whose ends engage the perforations in the cross-strips, substantially as shown and described.

WM. A. MURRAY.

Witnesses:

W. F. MURRAY, EMMA LYFORD.

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